View clinical trials related to Influenza, Human.
Filter by:This Phase 3 study evaluates the safety, immunogenicity and lot-to lot consistency of 3 lots of aH5N1c vaccine for pandemic avian influenza, in approximately 2394 healthy adults ≥18 years of age receiving the vaccine and 797 healthy adults receiving placebo. Subjects were randomized in a 3:1 ratio to receive either aH5N1c vaccine or saline placebo. Enrollment was stratified by age: 18 to <65 years of age and ≥65 years of age, to allow adequate safety assessment of the entire age spectrum.
This Phase 2 Quadrivalent VLP Vaccine study is intended to replicate and extend the immunogenicity and safety results obtained in earlier Phase 1-2 and Phase 2 studies. The study is being conducted to evaluate that the immunogenicity profile of the Quadrivalent VLP Vaccine meets the US Center for Biologics Evaluation and Research (CBER) licensure criteria and to evaluate if the immunogenicity and the safety profile of the Quadrivalent VLP Vaccine is acceptable and comparable to that of the FluLaval® Tetra and Fluzone® High-Dose (HD). The study will also help to define the optimal dose in this population, establish potential competitive advantages, and support the design of future studies.
Background. For more than a century a causal link between influenza and cardiovascular disease has been suspected. It is conceivable that influenza may precipitate plaque rupture, increase cytokines with central roles in plaque destabilization and trigger the coagulation cascade. Accordingly, registry studies, case control studies and a few small randomized trials, all underpowered for clinical endpoints, have demonstrated that the risk for acute myocardial infarction (AMI) is increased following respiratory infection and that the risk of stroke and AMI in patients with established cardiovascular disease seem to be reduced following influenza vaccination. In May 2015 a Cochrane review concluded that influenza vaccination may reduce cardiovascular mortality and cardiovascular events but bias and inconsistent results in prior studies require higher-quality evidence to confirm these findings. High costs and little commercial interest in conducting a randomized trial on influenza vaccine in cardiovascular disease stand in the way. Objective. The objective is to document whether influenza vaccination protects against cardiovascular events and death in patients with an AMI or very high risk stable coronary artery disease patients. Methods. Population: 4400 patients with ST-elevation (STEMI), non-ST elevation myocardial infarction (NSTEMI) or very high risk stable coronary artery disease are randomized 1:1 in a blinded fashion using an RRCT design and followed up via registries and telephone calls. Intervention: Influenza vaccination. Control: Placebo (saline). Outcome: The primary endpoint is a composite of death, myocardial infarction and stent thrombosis till 1 year. Patients will be included in the study in all of Sweden's 7 university hospitals and 5 general hospitals, 4 university hospitals and 1 general hospital in Denmark, in 1 specialized heart center in Norway, 2 university hospitals in Czech Republic, 6 hospitals in Scotland, 1 university hospital in Latvia and 2 hospitals in Bangladesh. Secondary endpoints are time to all-cause death till 1 year, time to cardiovascular death till 1 year, time to stent thrombosis till 1 year, time to revascularization till 1 year, time to myocardial infarction till 1 year, time to cardiovascular death, a new myocardial infarction or stent thrombosis (first occurring) till 1 year, time to stroke, including TIA till 1 year, time to rehospitalization for heart failure till 1 year, time to hospitalization for arrhythmia till 1 year or length of hospital stay (if information is available). From a hypothesis generating perspective we aim to follow up patients through registries beyond 1 year and up to 5 years. The trial has been approved by the ethical committee system (Dnr 2014/264) and the Medical Products Agency (EudraCTnr -2014-001354-42) in Sweden. Perspectives. If a clinical benefit can be demonstrated in this prospective trial influenza vaccination may become an important novel in-hospital therapy for patients with cardiovascular disease and the accompanying direct and indirect societal gains will be profound.
Prospective cohort study to evaluate the safety and immunogenicity of the Butantan Influenza vaccine (Fragmented and Inactivated) among healthy adults with 18 to 59 years of age and elderly older than 60 years of age.
Prospective study to evaluate the safety and immunogenicity of Butantan Influenza seasonal vaccine.
This is a phase I, double-blind, randomized, placebo-controlled trial with two groups of subjects to assess the safety of the seasonal trivalent inactivated split virion influenza vaccine (A/H1N1; A/H3N2 and B strains). A total of 60 healthy male and female adults, aged from 18 through 45 years will be randomized to receive the vaccine (n=30) or placebo (n=30). In addition, immune responses induced by the vaccine will be evaluated.
INVESTED will test the hypothesis that high dose trivalent influenza vaccine will reduce cardiopulmonary events to a greater extent than standard dose quadrivalent influenza vaccine in high-risk cardiovascular patients with a recent history of myocardial infarction or heart failure. The trial will enroll 9300 participants over one Vanguard (pilot) season and three additional influenza seasons. The primary endpoint will be a composite of all-cause mortality or cardiopulmonary hospitalization.
This clinical study will collect fresh samples and perform laboratory testing on fresh and archived samples as described in the protocol.
This Phase 2 Quadrivalent VLP Vaccine study is intended to replicate and extend the immunogenicity and safety results obtained in earlier Phase 1-2 and Phase 2 studies. The study is being conducted to demonstrate that the immunogenicity profile of the Quadrivalent VLP Vaccine meets the US Center for Biologics Evaluation and Research (CBER) licensure criteria. The study will also help to define the optimal dose, establish potential competitive advantages, and support the design of future studies.
The primary purpose of this study is to validate the sensitivity and specificity of the Respirio Flu Test and the eLab Flu Test in detecting Influenza A as compared to the gold standard for detection, Reverse Transcriptase Polymerase Chain Reaction (RT-PCR). The secondary aims are to: Validate the sensitivity and specificity of the Respirio Flu Test and the eLab Flu Test in detecting Influenza B as compared to the gold standard for detection, Reverse Transcriptase Polymerase Chain Reaction (RT-PCR); Evaluate the correct interpretation of the Respirio Flu Test by subjects with influenza-like symptoms; Evaluate the subjects' satisfaction with the convenience, comfort and ease of use of the Respirio Flu Test.